It's a shame that this truly visually beautiful film didn't win best picture at the Oscars! however, in terms of cinematography and mise-en-scene, it is very well put together. The conscious decisions make it nostalgic of 1950s melodrama and shows a postmodern approach to the composition of cinema.
http://www.vanityfair.com/hollywood/2017/02/la-la-land-production-design